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2012 X5 - driving in the mountains of Colorado at ghway

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2012 X5 - driving in...
2012 X5 - driving in the mountains of Colorado at highway speeds (55+ mph) - feels like the engine loses power for a few seconds, then recovers. Condition occurs sporadically. Struggles to hold speed up hills. Any thoughts/ideas?
Submitted: 2 years ago.Category: BMW
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2/22/2016
BMW Mechanic: Steve, BMW Expert replied 2 years ago
Steve
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